Printing-machine.



S. G. DAVIS.

PRINTING MAGHINE.

APPLIOATION FILED SEPT. 24, 1910.

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S. G. DAVIS.

PRINTING MACHINE.

APPLICATION FILED SEPT. 24, 1910.

Patented Oct. 31, 1911.

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PRINTING MACHINE.

APPLICATION FILED SEPT. 24, 1910. 1,007,433 Patented Oct. 31, 1911.

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UNITED srArEs PATENT ornron.

SIDNEY CUTHBERT DAVIS, OF SOUTI-IWARK, ENGLAND, ASSIGNOR. OF ONE-HALF TO THE AMALGAMATED PRESS, LIMITED, OF LONDON, ENGLAND.

PRINTING-MACHINE.

Specification of Letters Patent.

Application filed September 24, 1910. Serial No. 583,608.

To all whom it may concern:

Be it known that I, SIDNEY OUTHBERT DAVIS, a subject of the King of Great Britain, residing at the Printing WVorks, Lavington street, Southwark, in the county of London, England, have invented certain new and useful Improvements in and Relating to Printing-Machines, of which the following is a specification.

This invention relates to printing machines, more particularly to that class known as fiat bed printing machines and has for its chief object to provide means whereby the tray which receives the printed sheets as they leave the machine, can be moved from the delivery board when fully loaded, and replaced by an empty tray to receive the work, without stopping the machine to effect the change of trays.

According to this invention, a device is provided which is of such a character, that two trays can be placed adjacent each other and in the same horizontal plane or approximately so, on a supporting member or frame so that one tray is receiving the work from the printing machine while the other remains idle, the supporting member or frame being adapted to be moved when a change of trays is necessary, so carrying the trays to a position in which the idle tray receives the work and the other tray can. be removed, the said supporting member or frame then being enabled to return to its initial position but without carrying the remaining tray now receiving the work, thus allowing another tray to be placed on said member or frame in the idle position, ready for the next changing operation, the changing and insert-ion of a new tray being effected without stopping the machine.

In order that the invention may be clearly understood and readily carried into effect the same will now be described more fully with reference to the accompanying draw ings in which Figure 1 is a diagrammatic side elevation of a two revolution flat bed printing machine provided with an automatic feed. Fig. 2 is an elevation of the device as attached to the delivery board showing a tray supported on the latter. Fig. 3 is a similar view to Fig. 2 but showing the tray supporting member or frame and the tray in the raised position. Fig. 4 is a plan of the device as shown in Fig. 2. Fig. -5 illustrates on an enlarged scale an elevation of the means employed for raising the tray supporting member. Fig. 6 is a cross sectional view taken on the line XY of Fig. 5. Fig. '7 embodies a series of diagrams showing the various positions of the device and trays in relation to the delivery board.

Referring to Fig. 1, A indicates a suitable form of automatic feed device for supplying the sheets to the printing cylinder B. C is the form or type bed which is reciprocatecl under the cylinder B, the sheets after being carried around with the cylinder are caught by the flier D and delivered on to a tray E supported on the delivery board G. The path of the sheets from the automatic feed A to the tray E is shown by the arrows in this Fig. 1. An empty tray F is supported on a frame or member a, in an idle position between the flier shaft and the printing cylinder B. The aforesaid supporting member a is in the form of a long rectangular frame, provided with an upwardly projecting ridge a on each of its longer sides. The frame is adapted to be moved over the delivery board G in suitable guides .Z) projecting above the delivery board, each guide being provided with a longitudinal slot or opening 6 into which the aforesaid ridges a on the frame a can project. The outer sides of the guides b may be each provided with suitable vertical rollers in the locations indicated at b in Figs. 2 and 6 to reduce friction should the frame a come in contact with the guides. In the normal or initial position of the frame the ridges do notproject above the guides, so that the tray E receiving the work is supported on the delivery board G by resting on the guides 5 while part of the frame a extends under the flier D and supports an empty tray F between the flier shaft or rocker, and the printing cylinder B as shown in Figs. 1 and 7. The sheets on leaving the printing cylinder are caught by the flier and placed in the tray E supported on the delivery board in the usual way, and during this operation an empty tray can be placed on that part of the frame a between the flier shaft and the printing cylinder.

In order that the frame may operate to carry the receiving tray along the delivery board G when the empty tray F is required to take the place of the receiving tray E the projecting ridges a must be caused to stand Patented Oct. 31, 1911.

above the guides and so raise the tray E. For this purpose the long sides of the frame are supported on two rollers c which facilitate the movement, each roller being carried on a spindle e which is adapted to be raised or lowered in a bracket (Z secured to the under side of the delivery board. The brackets (Z are each provided with a slot d to permit of the upward and downward movement of the spindle c. The under surface of the delivery board is cut away at c to allow the spindle c to be raised sufficiently to cause the ridges a on the frame a to project above the guide 6 as shown in Fig. 6. The spindles c are normally supported in the lowered position but they may be raised by the movement of suitable inclined or cam surfaces 6 causing said rollers to be raised to lift the frame. The inclined or cam surfaces may be mounted on an under frame f supported on rollers g mounted on fixed studs 9 extending from the aforesaid brackets d the said underframe being provided at the outer end with handles f by which it can be moved.

'I'Vhen the underframe f is moved in one direction the aforesaid movable spindles 0 are raised by the inclined surfaces and lowered when the under-frame is moved in the opposite direction. The movable spindles are provided with rollers which engage the inclined surfaces to facilitate movement, and each of the inclined surfaces is provided with adepression e, at the highest point of the incline, in order that the spindles (1 may rest in said depressions to support the frame a in the raised position, while the lowest point of the incline is formed with a projection 0 so that the spindles rest against this projection to support the frame a in the lowered position.

Referring to Fig. 7 the diagram I indizates the normal or initial position of the device in which position the receiving tray E is supported on the delivery board G, while an empty tray F is supported on the frame a in the idle position. In the diagram II the frame a is shown in the raised position and lifting the tray E from the delivery board, although the latter is still in position for receiving the sheets from the flier D. moved in a longitudinal direction in the direction of the arrow and thus carries the two trays to a new position (see diagram III) in which the idle tray F now receives the sheets from the flier, and the fully loaded tray E can be removed. The neXt operation is to lower the frame a so that the tray F is deposited on the delivery board, as shown in diagram IV, thus enabling the frame to be moved in the opposite direction to be returned to its normal or initial position (see diagram V) so that another empty tray can be placed on the frame a in the lVhen the frame a is so raised it is idle position before the tray now receiving is fully loaded, ready for the next change. It will be seen that the changing operation effected without stopping the machine as immediately the fully loaded tray is moved an empty tray takes its place.

It is preferable to provide an automatic feed to be used in conjunction with the tray changing device, so enabling the printing machine to be run continuously for a considerable length of time.

hat I claim and desire to secure by Letters Patent of the United States is 1. A sheet receiving apparatus comprising a carrier for two trays in substantially the same plane, and means whereby said carrier may be reciprccated to permit it to be shifted to substitute an empty tray for a tilled one in receiving position, means being provided for retaining the substituted tray in receiving position during backward movement of the carrier to position to take another empty tray.

2. A sheet receiving apparatus comprising a carrier for two trays in substantially the same plane, and means whereby said carrier may be reciprocated to permit it to be shifted to substitute an empty tray for a'filled one in receiving position, means be ing provided for retaining the substituted t'ay in receiving position while the carrier is shifted back to take another empty tray, said retaining means comprising a stationary support, the carrier having means for altering its height relatively to said support.

3. A sheet receiving apparatus comprising a stationary support for a tray, a car rier for two trays in substantially the same plane, said carrier being mounted to reciprocate relatively to said support, and means for altering the height of the carrier to cause it. to lift one tray from the support and, after being shifted, deposit another tray thereon.

4. A sheet receiving apparatus comprising an inclined stationary support for a tray, a carrier for two trays in substantially the same plane, said carrier being mounted to reciprocate relatively to said. support, the bearings for the carrier being inclined, and means for altering the height of the carrier to cause it to lift one tray from the supportand, after being shifted, deposit another tray thereon.

5. A sheet receiving apparatus comprising an inclined stationary support for a tray, a carrier for two trays in substantially the same plane, said carrier being mounted to reciprocate relatively to said support, the bearings for the carrier being inclined, and means for altering the height of the carrier to cause it to lift one tray from the support and, after being shifted, deposit another tray thereon, rollers being provided to support the weight of the carrier whereby, when the carrier is raised to lift a filled tray from the said stationary support, its movement to deliver the filled tray and substitute an empty one therefor, will be facilitated.

6. In a printing machine the combination with a delivery board, of brackets secured thereto, a supporting member movably mounted in each of said brackets, a longitudinally movable tray carrying frame supported on said members, and means for raising the supporting members to cause the tray carrying member to project above the delivery board.

7. In a printing machine the combination with a delivery board of brackets secured thereto, a supporting roller movably mounted in each of said brackets, tray supporting guides secured to said delivery board, a longitudinally movable tray carrying frame supported on said rollers and within said guides, upwardly projecting ridges on said frame, and means for raising said rollers to cause the said ridges to project above the guides on the delivery board.

8. In a printing machine the combination with a delivery board, of brackets secured thereto, a supporting member movably mounted in each of said brackets, a longitudinally movable tray carrying frame supported on said members, a movable underframe supporting said members, and means on said under-frame for vertically moving said members when the under-frame is moved.

9. In a printing machine the combination with a delivery board, of brackets secured thereto, a supporting roller movably mounted in each of said brackets, tray supporting guides also secured to the delivery board, a longitudinally movable tray carrying frame supported on said rollers and within said guides, upwardly projecting ridges on said frame, a longitudinally movable underframe, fixed members on said brackets for carrying said under-frame, inclined surfaces on said under-frame, a spindle for each of said rollers supported on said in clined surface, and means for moving said under-frame in one direction so that the roller spindles are raised by said inclined surfaces, in the other direction to allow the rollers to drop to the lowermost position.

10. In a printing machine, the combination with a delivery board of a longitudinally movable tray carrying frame, vertically movable rollers for supporting said frame, brackets on the delivery board for guiding said rollers, fixed studs on said brackets, an elongated spindle foreach of said rollers, a longitudinally movable underframe supported between said fixed studs and the roller spindles, inclined surfaces on said under-frame on which said roller spindles are supported a depression at the highest point of each of said inclined surfaces, in which the roller-spindles are retained in the highest position and a projection at the lowest point of each of said inclines to retain the roller spindles in the lowered position.

11. In a printing machine the combination with a delivery board, of tray supporting guides mounted thereon and each provided with a longitudinal opening, brackets secured to the delivery board, a vertically movable roller mounted in each of said brackets for supporting said frame, a longitudinally movable frame supported on said rollers and mounted within said guides upwardly projecting longitudinal ridges on said frame, elongated spindles for said rollers, friction rollers therefor, fixed studs on said brackets, friction rollers therefor, a longitudinally movable under-frame supported between said fixed stud and the roller spindles inclined surfaces on said underframe on which the roller spindles are supported, a depression at the highest point of each of said inclined surfaces, and a projection at the lowest point of each of the latter.

In testimony whereof I affix my signature in presence of two witnesses.

SIDNEY CU'IHBERT DAVIS.

W'itnesses:

T. SELBY WUDLE, J. IVILLIAM PATOHING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

